//http://51weixuecom.gotoip4.com/
function g(o){
    return document.getElementById(o);
}
function HoverLi(m,n,counter){
    for(var i=1;i<=counter;i++){
        g('tb_'+m+i).className='active1_6';
        g('tbc_'+m+i).className='undis';
    }
    g('tbc_'+m+n).className='dis';
    g('tb_'+m+n).className='active2_6';
}